Managed scaling policy for an Amazon EMR cluster. The policy specifies the limits for resources that can be added or terminated from a cluster. The policy only applies to the core and task nodes. The master node cannot be scaled after initial configuration.

Instance Attribute Details

The EC2 unit limits for a managed scaling policy. The managed scaling
activity of a cluster is not allowed to go above or below these limits.
The limit only applies to the core and task nodes. The master node
cannot be scaled after initial configuration.